Case for portable tablet PC



FIG. 1 is a perspective view of a case for portable tablet PC showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a perspective view thereof shown in a folded configuration of use; and,

FIG. 9 is a top plan view thereof shown in an environment of use.

The broken lines represent an environment of use and form no part of the claim. 

CLAIM The ornamental design for a case for portable tablet PC, as shown and described. 